Fireproof insulating composition.



COATING OR PLASTIC.

UNITED STATES PATENTCFFICE.

FRANCIS MARION KEENER, OF CHICAGO, ILLINOIS, ASSIGNOB. 0F ONE-HALF TO EMIL G. I. BRILL, OF CHICAGO, ILLINOIS.

FEAEPBOOF INSULATING COMPOSITION.

No Drawing.

To all whom it may concern:

Be it known that I, FRANCIS MARION KEENER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Fireproof Insulating Composition, of which the following is a specification.

My invention relates to a fire-proof insulating composition.

My object is to produce from inexpensive,

. abundant and easily accessible materials a composition of matter which shall be fireproof, :1 good insulator easily waterproofed and adapted to be made in various and permanent colors. For this purpose I prefer to employ ashes, preferably ashes of coal, as a base or filler to make up the bulk of the material. With the ashes I employ a binder, a drier, if such is necessary other than the ashes themselves, an active substance and, if necessary, a colorifig material. My product is therefore made up of a filler, a binder, an active substance, and if desired, a drier and a coloring substance.

The ashes which I employ are preferably, as I have said, coal ashes and they should I be in a finely divided, powdered or pulverized condition. The binder which I employ is preferably the liquid s ilica te of soda. The drier I prefer to empToy wh en the binder is the li uid silicate d h finely divided absor ent cotton an t e active substance is a e y v1 e metallic compoun preferably of iron oxid. With 11011 compounds I am a e o obtain several fast colors. The manner in which these or their equivalents or similar substances are employed is the following: I take a quantity of the binder, say liquid silicate of soda, and if under the circumstances, and with the liquid silicate of soda this is desirable, I need a dryer, I mix with the silicate of soda a suitable quantity of finely divided absorbent cotton. I now, after thorouglIIy mixing these ingredients, apply thereto a. quantity of the active substance, for exam 1e iron oxigi in its finely divided conditiim: an then add to the mixture the largest possible quantity of fine ashes, the object being to obtain a putty-like or workable but soft material.

The mixture thus made is soft and plastic and can be rolled or pressed into any desired form. It is preferable to bring it into Specification of Letters Patent.

Patented Mar. 30, 1915.

Application filed June 12, 1912. Serial No. 703,225.

shape or form by heavy pressure applied in any desired manner. The surface can then be glazed, coated or treated in any ordinary manner so as to fill up the pores and render the completed product or the material in sheets or layers or in any other desired condition surface waterproof.

To give a practical illustration of the manner in which I have made use of my invention I will furnish an example; I take one ound of the li uid silicate of so and witi 1t mix, say mmfided cotton. They are stirred and mixed toge ier in any desired manner until the substance has assumed perhaps the form of a syrup-like mass. This usually takes about five minutes but of course the time will vary with the apparatus employed and the quantities dealt with and the condition will vary mixing is carried on say for five minutes until the mass is very soft and plastic though no longer syrupy.

The precise condition of the mass in each of these steps is not very important. I have only explained the working out of the process so as to aid me in making a proper disclosure of my invention. If the proper color has been obtained by the use of iron oxid of a particular color no further coloring is necessary, but if some other color is required, a suitable amount of coloring matter, preferably mineral, may be applied at this point and thoroughly mixed with the other ingredients. I now apply at intervals and stir into the mass thoroughly a quantity of finelv ground coal ashes slag or any other $111 a e se sin ere or completely. oxidized and incombustible finely reduced material, which may amount to as much as nine ounds but in any event it should be sumcient I; produce, when the mixture is thoroughly made with the ingredients already supplied, a plastic mass possibly something like putty and capable of being rolled and pressed into form and shaped as required. The finished roduct or sheets or pieces of material may We atErroofed b bein lazd coated or rea e 111 Dy 0! I I y persons skilled in the art. Of

Examine cotton above referred to is merely cellulose, and I do not desire to be limited in my invention to nothing but cotton, but have merely selected the cotton as a convenient and satisfactory cellulosic material.

.The consistency of the material should be such that it can stand for some hours and under the conditions above suggested it .would still be capable of being molded into form in from 6 to 48 hours after the complete mixture had been made. Of course I ave only given this illustration as a means of setting forth a single practical illustration of the use of my invention.

The new article of manufacture thus produced is valuable for a large variety of uses. It is useful for all insulating purposes, for boxes, particularly such as are used for shipment in the tropical zones where materials which cannot be attacked by insects are required, or cigar and soap boxes, building tiles and the like, or for any other case where stone, metal or wood is used. The material which may be employed is what is known as iron oxid.

The order or relative arrangement of the several steps in the process may be of course changed, but I have simply explained the convenient method of procedure in the several steps in the process.

I claim 1. A new composition of matter made up of 16 parts by weight of liquid silicate of soda, 1 part by weight of finely divided cotton, 4 parts by weight of finely divided iron oxid, and as much as 144; parts by weight of completely oxidizing mineral ash.

2. The process of producing a new composition of matter which consists in mixing together a small quantity of silicate of soda and a small quantity of finely divided fiber until the combination is the consistency of syrup, then mixing therewith a small quantity of finely divided material such as iron oxid until a soft putty-like substance is formed, then mixing with said soft puttylike substance a quantity of finely divided mineral ash.

3. The process of producing a new composition of matter which consists in mixing together a small quantity of silicate of soda and a small quantity of finely divided fiber 'imtil the combination is the consistency of syrup, then mixing therewith a small quantity of finely divided insoluble material until a soft putty-like substance is formed, then mixing with said soft putty-like substszilnce a quantity of finely divided mineral a 4. The process of producing a new composition of matter which consists in mixing together a small quantity of silicate of soda and a small quantity of finely divided fiber until the combination is the consistency of syrup, then mixing therewith a small quantity of finely divided iron oxid until a soft putty-like substance is formed, then mixing with said soft putty-like substance a quantity of finely divided mineral ash.

A new composition of matter made up of 16 parts by weight of liquid silicate of soda, 1 part by weight of finely divided cotton, 4 parts by weight of a finely divided metallic pigment, and as much as 144 parts by weight of completely oxidized mineral ash.

6. The process of producing a new composition of matter which consists in mixing together a small quantity of silicate of soda and a small quantity of finely divided fiber until the combination is the consistency of syrup, then mixing therewith a small quantity of finely divided metallic pigment until a soft putty-like substance is formed, then mixing with said soft putty-like substance a quantity of finely divided mineral ash.

Signed at Chicago, Illinois, this 10th day of June 1912-.

FRANCIS MARION KEENER.

\Vitnesses Fnaxors W. PARKER, Jr., LuLU JORDAN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

